Microstructures after Bending Deformations to Fracture of Zr Ion Irradiated Superplastic Ceramic 3Y-TZP
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Published:2007-07
Issue:
Volume:551-552
Page:475-480
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ISSN:1662-9752
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Container-title:Materials Science Forum
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language:
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Short-container-title:MSF
Author:
Sakuma Takaaki1,
Motohashi Yoshinobu1,
Shibata Taiju2,
Sawa Kazuhiro2,
Ishihara Masahiro2
Affiliation:
1. Ibaraki University
2. Japan Atomic Energy Research Institute
Abstract
The effects of Zr ion irradiation on the mechanical properties of a typical superplastic
ceramic, 3mol% yttria stabilized tetragonal zirconia polycrystal (3Y-TZP), were examined and
discussed. The specimens were irradiated by Zr11+ ions with 130MeV at fluence level of 3.5×1012 and
2.1×1013 ions/cm2 in the TANDEM accelerator at Tokai Reasearch Establishment of JAEA.
Microstructures after annealing and bending deformations to fracture of Zr ion irradiated 3Y-TZP
were examined. It was found that the ratio of intergranular fracture to intragranular fracture was
increased in the region that was affected by Zr ion irradiation. It seemed that grain boundary cohesion
became relatively weak in the irradiated surface region. The influence of Zr ion irradiation on the
mechanical properties almost disappeared when the irradiated 3Y-TZP was subsequently heated to
1173K.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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